Fi 3+ Behavior Adapter
Configure this adapter to the Fi tracker, placement, strap width and hardware that match your gear.
PRODUCT DETAILS
What to know before ordering
Keep the collar. Keep the full Fi experience.
Confirm before ordering: this adapter is for the Fi 3+ only and is a collar-only option. The module must hang freely by its endlinks at the neck for Fi 3+ behavior tracking. For a harness, Fi Series 2, or Fi Series 3, choose the Fi Series 2, 3 & 3+ Compact Adapter. Use the Fi compatibility guide if you are unsure.
The Fi 3+ Behavior Adapter lets you mount a Fi 3+ module directly to a compatible collar while positioning the tracker so its motion sensor can collect behavior data as intended.
The module is secured at two snap points, giving you Fi 3+ behavior tracking, GPS location, and geofence functionality from the collar your dog is already wearing.
Choose the width that matches your dog’s collar, then select the snap style and hardware finish that works best for you. Current options accommodate ¾-inch, 1-inch, 1½-inch, and 2-inch collars, with an option for other widths when needed.
This adapter is designed for collar use only. If you want Fi 3+ GPS and geofence capability on a harness, choose the Fi 3+ Compact Adapter instead.
Handcrafted in Alaska using durable polyester webbing and marine-grade hardware.
Full Fi function. On the collar they already wear.
FI ADAPTER
Let’s finish your adapter setup.
We already know which Fi family brought you here. Now match the adapter to the gear it will attach to, the strap width, and the hardware you prefer.
Where will this adapter be used?
Behavior Adapter is a collar-only path so the Fi 3+ module can sit in the intended neck position.
Measure the strap where the adapter will sit. Choose the corresponding published adapter option.
Choose the available snap hardware for this adapter.
YOUR ADAPTER
Fi 3+ Behavior Adapter
- Dog
- Fi
- Placement
- Strap width
- Hardware
WHY A MARTINGALE?
Secure when needed. Relaxed when it isn’t.
A martingale is a limited-slip collar. It sits relaxed during normal wear and reduces its opening when leash tension is applied, helping prevent a dog from backing out of the collar.
The standard EDG martingale is built without a buckle, so it must pass over the widest part of the head and then adjust at the neck. If you add the Tactical Buckle, the collar opens instead and neck measurement drives the size.
The goal is secure, properly fitted movement—not continuous pressure.